MATRIX INVERSE
CLASS 9 & 10 · MATHS
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REMEMBERA⁻¹ = adj A ÷ |A|
- |A| = ad − bc
- |A| = 0 → no inverse (singular)
- A × A⁻¹ = I (identity)
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CLASS 9 & 10 · MATHSHow do you 'divide' by a matrix?
Inverse of a 2 × 2 matrix in 25 seconds
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